/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/PropertySets/CreateMeshObjectTypeProperties.h
This function returns a list that is shown to select OutputType.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)() const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & GetOutputTypeNamesFunc()